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Posted to common-issues@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2021/09/29 10:40:00 UTC

[jira] [Created] (HADOOP-17945) JsonSerialization raises EOFException reading JSON off google GCS

Steve Loughran created HADOOP-17945:
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             Summary: JsonSerialization raises EOFException reading JSON off google GCS
                 Key: HADOOP-17945
                 URL: https://issues.apache.org/jira/browse/HADOOP-17945
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
    Affects Versions: 3.3.1
            Reporter: Steve Loughran
            Assignee: Steve Loughran


The JsonSerialization<> load code doesn't work on gcs as it uses "stream.available()" to fail with a meaningful message if the stream is empty.

But that method is meant to say how much data is available without blocking, something we actually get wrong ourselves. Google GCS team didn't get it wrong, so on a read(), if there's no local buffer, an EOFException is raised



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